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Projection Distance
Ceiling Installation (The unit is set so that the bottom is parallel to the
ceiling. The V Keystone function has been done.)
Projection distance
Unit: m (inches)
Projection distance formula
D: Projected image size (Diagonal)
H: Distance between the top edge of the image and the center of the lens
Expression#1 (Projection Distance L) Unit: m (inches)
Expression#2 (Height H from lens center to bottom of screen)
In the case of ceiling mounting, check with your dealer regarding the use of a mount kit that is
warranted for use with this product.
Front of the lens
Height H from
lens center to
bottom of screen*
A
Projected
image
Projection distance L
* The number will be minus when the top of the projected image is higher than A.
Projected image size
Projection Distance L
Height H from lens center to
bottom of screen
Diagonal D Width × Height
Minimum
Projection
Distance L
Maximum
Projection
Distance L
80 inch (2.03 m) 1.63 × 1.22 (64 × 48) 2.25–2.92 (89–115) – 0.04 (– 1) 0.01 (1)
100 inch (2.54 m) 2.03 × 1.52 (80 × 60) 2.82–3.65 (111–144) 0.05 (– 2) 0.02 (1)
120 inch (3.05 m) 2.44 × 1.83 (96 × 72) 3.39–4.39 (134–173) 0.06 (– 2) 0.02 (1)
150 inch (3.81 m) 3.05 × 2.29 (120 × 90) 4.25–5.50 (168–216) – 0.07 (– 3) 0.02 (1)
200 inch (5.08 m) 4.06 × 3.05 (160 × 120) 5.67–7.34 (224–289) – 0.09 (– 4) 0.03 (1)
Minimum Projection Distance L Maximum Projection Distance L
L=0.028483 × D – 0.0296
(L=1.121367 × D – 1.1665)
L=0.036888 × D – 0.0290
(L=1.452301 × D – 1.1431)
Minimum Projection Distance L Maximum Projection Distance L
H= – 0.00046 × D + 0.00024
(H= – 0.01817 × D + 0.00941)
H=0.00017 × D – 0.00046
(H=0.00663 × D – 0.01802)
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